Executable Jar File Creation

[Doctor Cactus]

Hi, I am writing a Java application and I need help in creating an executable jar file(.jar) for my application. I have succeeded in creating a jar file using the command prompt by following instructions from other websites, but when I try to run it, It says "Java Virtual Machine Launcher could not find main class". Basically, all my .java and .class files are stored in a folder called 'Java123' . They are all seperate .java files e.g. it is not a project. Could this be a problem?

Help is greatly appreciated.

[Eranga]

To create a jar file, no need to use *.java files, use *.class files of your project. Can you tell me which command you use to create that jar file on the command prompt?

[racerxadam]

my guess is that you haven't specified the Main-Class attribute in the jar's manifest

[Doctor Cactus]

I used the instructions at this website:

skylit.com/javamethods/faqs/createjar.html

[racerxadam]

Sun's Jar Tutorial

Read the warning under the section "Setting an application's entry point". I created a helloworld application and tried the steps from the link you listed and got the same error. After reading a bit on Sun's site I was able to get it to work correctly. Extract your jar and make sure the manifest has the Main-Class attribute.

[Eranga]

Off topic.

In most of the cases dealing with the Suns' tutorial is the best way to keen on Java. Everything you want is there.

[NettemJAVA]

Hi All,

:)

I am newly joined in Java forum group.

:)

BR// Venkat

[Eranga]

Hi All,

:)

I am newly joined in Java forum group.

:)

BR// Venkat

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